A ) Calculate 13.8 x 4.6 x 5.4 : 1.38 : 2.3 : 2.7 = ____________
B ) One is putting ping pong balls into 11 boxes. In each of the boxes, number
of ping pong balls shall not be less than 10, not equal to 13 and is not
multiple of 5. If the number of ping pong balls is different in each box, one
needs at least _______ ping pong balls to fill in all the 11 boxes.
C ) From point A, a robot walks to the south for 1.2 meter, then walks 1 meter
to the east, follow by another 1.8 meter to the south. Then he walks
another 2 meters to the east and again 1 meter to the south before
reaching point B. What’s the straight line distance between point A and B?
Loga
Sinh Học lớp 12
